Dr. Tony Holohan:

It is public health advice. It relates to our assessment in relation to the potential incubation period of this virus. There is pretty much international consensus on 14 days. Few countries are at variance with that particular measure. It is to try and ensure that we limit travel from overseas and have people coming in who do not spend a period of time. The reason it does not exist for travel on the island is that our assessment is that, in broad terms, the island is behaving as one from a disease point of view. In Northern Ireland, the incidence is broadly similar.